High-resolution aerosol data from the top 3.8 kyr of the East Greenland Ice coring Project (EGRIP) ice core

• Published in: Earth System Science Data
• Main Authors: T. Erhardt, C. M. Jensen, F. Adolphi, H. A. Kjær, R. Dallmayr, B. Twarloh, M. Behrens, M. Hirabayashi, K. Fukuda, J. Ogata, F. Burgay, F. Scoto, I. Crotti, A. Spagnesi, N. Maffezzoli, D. Segato, C. Paleari, F. Mekhaldi, R. Muscheler, S. Darfeuil, H. Fischer
• Format: Article
• Language: English
• Published: Copernicus Publications 2023-11-01
• Online Access: https://essd.copernicus.org/articles/15/5079/2023/essd-15-5079-2023.pdf
• ISSN: 1866-3508; 1866-3516

<p>Here we present the high-resolution continuous flow analysis (CFA) data from the top 479 <span class="inline-formula">m</span> of the East Greenland Ice coring Project (EGRIP) ice core covering the past 3.8 kyr. The data consist of 1 <span class="inline-formula">mm</span> depth-resolution profiles of calcium, sodium, ammonium, nitrate, and electrolytic conductivity as well as decadal averages of these profiles. The nominally 1 <span class="inline-formula">mm</span> data represent an oversampling of the record as the true resolution is limited by the analytical setup to approximately 1 <span class="inline-formula">cm</span>. Alongside the data we provide a description of the measurement setup, procedures, the relevant references for the specific methods as well as an assessment of the precision of the measurements, the sample-to-depth assignment, and the depth and temporal resolution of the data set. The error in absolute depth assignment of the data may be on the order of 2 <span class="inline-formula">cm</span>; however, relative depth offsets between the records of the individual species are only on the order of 1 <span class="inline-formula">mm</span>. The presented data have sub-annual resolution over the entire depth range and have already formed part of the data for an annually layer-counted timescale for the EGRIP ice core used to improve and revise the multi-core Greenland ice-core chronology (GICC05) to a new version, GICC21 <span class="cit" id="xref_paren.1">(<a href="#bib1.bibx30">Sinnl et al.</a>, <a href="#bib1.bibx30">2022</a>)</span>. The data are available in full 1 <span class="inline-formula">mm</span> resolution and decadal averages on PANGAEA (<a href="https://doi.org/10.1594/PANGAEA.945293">https://doi.org/10.1594/PANGAEA.945293</a>, <span class="cit" id="xref_altparen.2"><a href="#bib1.bibx7">Erhardt et al.</a>, <a href="#bib1.bibx7">2022</a><a href="#bib1.bibx7">b</a></span>).</p>